The Siemens 3VA1096-2ED32-0AA0-ZD00 is a 3-pole IEC frame 100 circuit breaker rated 16 A continuous, with a breaking capacity of 16 kA Icu at 415 V (class B). It uses a TM210 thermal-magnetic trip unit — fixed overload protection at Ir=16 A and fixed short-circuit protection at Ii=20 x In (320 A). The 'FTFM' designation indicates fixed thermal, fixed magnetic settings, meaning no field-adjustable dials; what you order is what protects the circuit.
For a 400 V distribution board with a prospective short-circuit current under 16 kA, this breaker clears the fault without upstream coordination issues. The fixed Ii=20 x In (320 A) means magnetic trips only on high-impedance faults — suitable for motor or transformer branch circuits where inrush must ride through without nuisance tripping. The TM210 thermal curve provides inverse-time overload protection for cable and equipment.
Deployment context
The nut keeper kit (included per the order code suffix) secures the breaker against vibration in OEM equipment — useful for DC Power OEM installations in China, as noted in the spec. The 3VA1 frame is compact enough for high-density panel layouts, but the fixed trip settings mean you cannot dial down the Ir; the 16 A rating must match the load cable ampacity exactly.